Device for preventing the racing of ships  propellers



(No Model.)

J. H. (JOE.

DEVICE FOR PREVENTING THE RAGING- OP SHIPS PROPELLERS.

Patented July 29, 1890.

@Mw m mm, vusnmorau n c UNITED STATES PATENT OFFICE.

JOHN H. COE, OF PHILADELPHIA, PENNSYLVANIA.

DEVICE FOR PREVENTING THE RACING OF SHIPS PROPELLERS.

SPECIFICATION forming part of Letters Patent No. 433,274, dated July 29,1890.

Application filed May 20, 1890. Serial No. 352,499. (No model.)

To all whom it may concern.-

Be it known that I, JOHN II. COE, a citizen of the United States, and aresident of Philadelphia, Pennsylvania, have invented certainImprovements in Devices for Preventing the Racing of Ships Propellers,of which the following is a specification.

The Object of my invention is to automatically regulate the flow ofsteam to the engines of a steam-vessel using a steam-propeller, by whichthe racing of the propeller is checked to a great extent. This object Iattain in the following manner, reference being had to the accompanyingdrawing, in which the figure is a View in elevation of my improvedautomatic regulator.

A is the deck of the vessel, on which is secured the standard B, havingat its upper end a socket b, to which is adapted the ballpivot d of thebeam D, thus forming a universal joint. The beam 1) is hollow, and has acentral partition c, and the ends of the beam are closed by caps ff,screwed or otherwise secured to the beam. The beam D has a slottedflange c, and-adapted to the slot is a pin g, swiveled to the upper endof a connecting-rod E. The lower end of the rod is swiveled to a block72, which is secured to a slotted lever F by means of a pin 7i. The rodE is adjustable in length, and in the present instance is made in twoparts, connected together by a right and left hand nut.

The lever F is secured to the valvestem m of the throttled valve M ofthe engine that drives the propeller. The rod is adjustably secured toboth the beam and the lever in order to regulate the opening and closingof the valve.

To regulate the throw of the beam D, two sct-screws J J are screwed intoextensions a a on the standard B. These screws are provided withjam-nuts By raising and lowering the screws the throw of the beam isdiminished or increased. I preferably place a single ball a in thecavity in the portion D of the beam which is connected .to the rod E,and two balls 8 sin the cavity in the opposite portion D so that theweight of a rod is balanced. In place of the balls mercury or otherfluid may be used, and the number and form of rolling or sliding weightsneed not be adhered to.

The beam D extends parallel with the length of the vessel, so that asthe vessel rises and falls by the action of the sea the beam will actaccordingly. As the Vessels stern rises out of the water, thus exposingthe propeller, the beam D will act to close the valve and cut off thesteam to the extent required, and as the stern falls the valve will beopened. The valve and lever F may be connected by gearing, ifcircumstances require.

I claim as my invention 1. The combination, in an automatic regulator,of the standard mounted on the was sel, the beam pivoted thereto,sliding weights carried by said beam, with the regulatingvalve, and arod connecting the beam with the valve, so that as the vessel pitchesthe flow of steam through the valve will be regulated.

2. The combination of the standard, a socket therein, a beam, aball-pivot adapted to said socket, weights carried by said beam, and avalve, with a rod connecting the beam to the valve, substantially as setforth.

3. The combination of the standard, the beam pivoted thereto, weightscarried by said beam, a slotted flange on one portion of said beam, aslotted valve-lever, and a rod adjustably secured to both the flange andthe lever, whereby the flow of steam through the valve will beregulated, substantially as described.

l. The combination of the standard, the hollow beam pivoted thereto,said beam having a central partition c, forming two portions with capsclosing the ends of the two pertions, weights confined in said hollowbeam, a valve, and a rod connecting the beam to the valve, substantiallyas set forth.

5. The combination of the standard, the beam pivoted thereto, slidingweights carried by said beam, extensions on said standard, set-screwsadapted to the extensions to limit the movement of the beam, a valve,and a rod connecting the beam to the valve, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN H. COE. Witnesses:

HENRY HOWSON, HARRY SMITH.

